Technical Specification:
Bluetooth Version: V4.1
Bluetooth Profiles Supported: HSP, HFP, A2DP, AVRCP
Battery of Headset: 45mAH Li-polymer Battery
Battery of charging box: 300 mAh
Charging Voltage of Base: 5V
Weight(one headset): About 4.6g

Music Playing Time: Up to 2.5 hours
Charging Time of Headset: About 1 hours
Charging Time of Base: About 2 hours
Charging Headset Times from Charging Base: 2-3 times
Charging Base Supply Power for Headset Music Play Time: About 6 hours

Package Includes:
2 x TOZO T8 True Wireless Earbuds
1 x 300mAh Charging Box
1 x User Manual
1 x Quick Guide
1 x USB Charging Cable (wall adapter not included)
3 x Couples Silicone Ear Caps (S and L size caps were packed into the black cable box, M size caps are on the earbuds)

NOTE:
(R) headset is the master headset , (L) headset is the slave headset.
Only master headset (R) has sound during phone calls.
(This safety feature allows you to hear the traffic while driving.)